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  • LM3409HVEVAL: Fast LED Driver for Machine Vision Applications

    Resolved
    Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409EVAL , LM3409 Good morning, I'm looking to create a fast LED driver for a machine vision application and wondered if you'd be able to help with specifying a suitable driver and reviewing…
    • Resolved

  • LM3409HVEVAL: Start Up delay at 20kHz PWM

    Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409EVAL , LM3409 , LM3409HV Hi TI, we have a problem with the LM3409EVAL Board. https://www.ti.com/tool/LM3409HVEVAL The LM3409 operates at 1MHz with a 33uH inductor. We use the external…

  • LM3409HVEVAL: AN-1953 LM3409HV Evaluation Board - Iled rise time is too slow & frequency shift with pwm ducty cycle

    TI Thinks Resolved
    Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409HV Hello, we have two problems with the AN-1953 LM3409HV Evaluation Board. 1. Figure 8 shows 200ns and Figure 9 shows 10ns Iled rise time. https://www.ti.com/lit/ug/snva390d/snva390d…

  • LM3409HVEVAL: Design 3 conflict with datasheet specs

    TI Thinks Resolved
    Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409HV I bought a 3409hv evm and I'm changing it to work with a 2.8A Iled and 0.15A detailed. A design somewhat similar to design 3 of the evm,but with slightly higher output current. The issue…
    • Answered

  • LM3409HVEVAL: module stopped working after minor changes

    Resolved
    Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409HV , LM3409 I received the LM3409HV EVM and did some quick tests to make sure it was working okay,which it was. I then replaced R6 for a 30k resistor and R9 for a 82m resistor. After switching…
    • Resolved

  • LM3409HVEVAL: Can this evaluation board be used to operate LEDs with different power requirements?

    Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409 , TPS92513 Hi, I was wondering if I can use this evaluation board to power an LED ring, that consists of two strings of 3 LEDs each. The LED ring operates at a forward voltage of 8 V…

  • LM3409HVEVAL: EVM dimmimg mode Related Inquiries

    TI Thinks Resolved
    Part Number: LM3409HVEVAL Other Parts Discussed in Thread: LM3409HV , LM3409 Hello My client currently wants to make a dimming light of 20kHz using the LM3409HV. It is currently under testing with the LM3409HV EVM. The question arises when the EVM…

  • RE: LM3409HVEVAL: External Dimming with 2 Diodes

    Hello Yo, I'm not sure why it looks so bad with the higher resistance, but most transient models have some issues, especially when you have corner cases. With that output voltage I can see why the Roff values are so different. I'm not sure exactly how…

  • RE: LM3409HVEVAL: Question regarding external PWM contol

    Clint, thanks again for all the help. Looks like staying with external PWM suits my needs the best. But now I know. Rich

  • LM3409HVEVAL Design Files

    Other Parts Discussed in Thread: LM3409HVEVAL Hello, I am searching for the design files for the LM3409HVEVAL http://www.ti.com/tool/lm3409hveval Thanks in advance, Eric

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